2020ApJ...892..151L


Query : 2020ApJ...892..151L

2020ApJ...892..151L - Astrophys. J., 892, 151-151 (2020/April-1)

Prospects for directly imaging young giant planets at optical wavelengths.

LACY B. and BURROWS A.

Abstract (from CDS):

In this work, we investigate the properties of young giant planet spectra in the optical and suggest that future space-based direct imaging missions should be considering young planets as a valuable and informative science case. While young planets are dimmer in the optical than in the infrared, they can still be brighter in the optical than a mature planet of similar mass. Therefore, an instrument designed to characterize mature planets should also be suitable for high-precision photometric imaging and spectroscopy of young self-luminous planets in a wavelength range and at a contrast ratio not currently attainable from the ground. We identify known young self-luminous companions that are feasible targets for coronagraphic instrument on the Wide Field Infrared Survey Telescope (WFIRST-CGI) and compute spectra for them, including a treatment of scattering and reflected light at optical wavelengths. Using these results, we highlight potentially diagnostic spectral features that will be present in the WFIRST-CGI wavelengths. Expanding to direct imaging missions beyond WFIRST-CGI, we also use evolutionary models across a grid of masses and planet-star separations as inputs to compute spectra of hypothetical objects, exploring when reflected light may contribute to a degree comparable to that of thermal emission from the residual heat of formation.

Abstract Copyright: © 2020. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Exoplanet atmospheres - Exoplanets - Extrasolar gas giants - Direct imaging - Substellar companion stars

Simbad objects: 23

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Number of rows : 23
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 HD 984b Pl? 00 14 10.2530723028 -07 11 56.814225050           ~ 6 0
2 HD 1160B LM* 00 15 57.26 +04 15 03.7           ~ 30 0
3 * 51 Eri b Pl 04 37 36.1323118067 -02 28 24.778826936           ~ 144 0
4 EM* LkCa 15c Pl 04 39 17.7912813350 +22 21 03.387667491           ~ 9 0
5 EM* LkCa 15b Pl 04 39 17.7912813350 +22 21 03.387667491           ~ 75 1
6 EM* LkCa 15d Pl? 04 39 17.7912813350 +22 21 03.387667491           ~ 7 0
7 * bet Pic PM* 05 47 17.0876901 -51 03 59.441135 4.13 4.03 3.86 3.74 3.58 A6V 1796 1
8 * bet Pic c Pl 05 47 17.0876901 -51 03 59.441135           ~ 37 0
9 * bet Pic b Pl 05 47 17.0876901 -51 03 59.441135           ~ 437 1
10 HD 50571B BD* 06 50 00.93 -60 14 56.7           L4-10 18 0
11 HD 76346 ** 08 53 03.7790012472 -56 38 58.147535688   5.982 5.998     A0V 51 0
12 HD 95086b Pl 10 57 03.0216129217 -68 40 02.446874288           ~ 87 1
13 HD 116434C BD* 13 24 36.13 -51 30 16.7           L5-7 54 1
14 CD-40 8434c Pl 14 08 10.1545137760 -41 23 52.576649494           ~ 89 0
15 CD-40 8434b Pl 14 08 10.1545137760 -41 23 52.576649494           ~ 136 0
16 CD-40 8434 TT* 14 08 10.1545500744 -41 23 52.573291080   13.42 12.18 11.71 10.506 K7IVe 249 0
17 HD 206893b Pl? 21 45 21.9056012837 -12 47 00.068065895           ~ 27 0
18 * 51 Peg b Pl 22 57 27.9804167474 +20 46 07.782240714           ~ 604 1
19 HD 218396e Pl 23 07 28.7156905667 +21 08 03.302133882           ~ 172 1
20 HD 218396c Pl 23 07 28.7156905667 +21 08 03.302133882           ~ 233 1
21 HD 218396d Pl 23 07 28.7156905667 +21 08 03.302133882           ~ 214 1
22 HD 218396 El* 23 07 28.7157209544 +21 08 03.310767492   6.21 5.953     F0+VkA5mA5 1038 0
23 * kap And B BD* 23 40 24.58 +44 20 02.8           L1 69 0

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2022.09.28-02:38:12

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